1. (a) All entrances to the hoistway shall be properly lighted while the elevator cars are in service.

2. (b) The minimum intensity of such illumination shall not fall below 0.50 foot candle at the floor level.

   Note:

   0.50 foot candle is approximately that given by a 25 watt frosted lamp placed seven feet from the landing edge of the car platform or of a 40 watt frosted lamp placed nine feet from such landing edge.

3. (c) In future installations of passenger elevators, the landings for a distance of not less than 18 inches from the hoistway line and across the entire width of the openings shall be constructed and maintained so as to prevent persons from slipping thereon.
4. (d) Floor tracks for doors or gates in future installations shall not project above the finished floor surface.

In factory buildings erected before or after October 1, 1913; in mercantile establishments in buildings erected before or after November 1, 1920.